I think two answers, though as per TFA there's probably a lot more behind this: First, she wants to get the best genetic material, and flying high is one of th

I think two answers, though as per TFA there's probably a lot more behind this: First, she wants to get the best genetic material, and flying high is one of those tests for drones to pass, and Second, needs to acquire genetic material from different bloodlines, hence does the business with several drones (obviously not an option within the hive).